HOW: Stand on a sturdy box/platform. Step forward with one leg and catch yourself in a split stance position while your trailing leg stays on the box. As you land, make sure you’re pushing your knee over the toes and assuming ~45º trunk angle.
FEEL: You will feel the quad of the front leg working to slow yourself down upon landing.
COMPENSATION: Avoid dropping the pelvis on the side of the trailing leg. Do not excessively hinge forward. Keep your knee in line with your foot and avoid caving it in.